FIRST USE ON OR ABOUT AUG. 1, 1973, ON OIL ADDITIVES TO REDUCE OIL CONSUMPTION, FRICTION WEAR; IN COMMERCE ON OR ABOUT AUG. 1, 1973.
FIRST USE ON OR ABOUT AUG. 1, 1973, ON OIL ADDITIVES TO REDUCE OIL CONSUMPTION, FRICTION WEAR; IN COMMERCE ON OR ABOUT AUG. 1, 1973.